One of the most interesting booths at last week's Macworld Expo was that of Smart Technologies, who were showing off their interactive touch surface systems. These aren't necessarily Mac-related, unfortunately -- the equipment Smart sells is just an interface, or rather a series of interfaces designed to work with touch-based software. But Smart has supported the Mac platform for over 15 years, we were told, and the demo units on the floor were running OS X.
There were a few different concepts up and running (including a table-style touchscreen that used a camera in the table looking up at the touch canvas to optically detect where you were touching), but the most interesting was probably
